Sommerville, I., & Sawyer, P. (1977). Requirements engineering: A good practice guide. Wiley.
芝加哥风格引文Sommerville, Ian, 与 Pete Sawyer. Requirements Engineering: A Good Practice Guide. Chichester, Eng. ; New York ; New Delhi: Wiley, 1977.
MLA引文Sommerville, Ian, 与 Pete Sawyer. Requirements Engineering: A Good Practice Guide. Wiley, 1977.
警告：这些引文格式不一定是100％准确.